Counting Atoms
Flashcard
•
Physics
•
5th - 8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an atom?
Back
An atom is the smallest unit of matter that retains the properties of an element.
2.
FLASHCARD QUESTION
Front
What is a molecule?
Back
A molecule is a group of two or more atoms bonded together.
3.
FLASHCARD QUESTION
Front
What does the subscript in a chemical formula represent?
Back
The subscript indicates the number of atoms of the element in the molecule.
4.
FLASHCARD QUESTION
Front
How do you find the total number of atoms in a compound?
Back
Add up all the atoms represented in the chemical formula.
5.
FLASHCARD QUESTION
Front
What is the chemical formula for water?
Back
H₂O, which means it has 2 hydrogen atoms and 1 oxygen atom.
6.
FLASHCARD QUESTION
Front
What is the chemical formula for sulfuric acid?
Back
H₂SO₄, which means it has 2 hydrogen, 1 sulfur, and 4 oxygen atoms.
7.
FLASHCARD QUESTION
Front
How many atoms are in the compound H₂C₃O₄N₅?
Back
There are 14 total atoms.
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